QLT Constant Multi-Current 21W LED Driver 250-700mA

The QLT Constant Multi-Current 21W LED Driver A40PDMC0000B is a constant current LED driver manufactured by QLT, designed as a direct replacement for the previous models PD309, PD312 and PD315. Built in PVC with compact dimensions of 138 × 40 × 18.5 mm, this standalone driver is defined by its exceptional versatility: the output current is selectable via DIP-Switch micro switches across eight values ranging from 250 mA to 700 mA — specifically 250, 350, 400, 450, 500, 550, 600 and 700 mA — with a ±5% tolerance, delivering a maximum power of 21W at 230V and 15W at 110V.

With a universal input voltage of 100–240V AC, the driver is compatible with electrical standards across Europe, Australia, the USA, the UK and Japan, making it well suited to professional and international installations. Its IP20 rating and compliance with Insulation Class II ensure safe use in indoor environments, whether recessed or surface-mounted. The driver supports a minimum of two 6V LED modules and incorporates self-resetting protection against overtemperature, open circuit and secondary short circuits, ensuring reliability and long service life in professional LED lighting systems.